Breeding

There is very little information on the breeding biology of Brown Trembler. A nest is reported from May (Bond 1941), and three young reportedly fledged from a nest in August (Zusi 1969). Specimens with enlarged gonads have been collected in March and April (Zusi 1969). The only nest that has been described was "cup-shaped and ... composed of rootlets, lined with finer rootlets and dead leaves" and was "situated in a fairly high coconut palm at the base of a frond, in the little hollow where it grew out of the trunk" (Bond 1941, based on a nest found by Percival Agar). A second hand report is of a nest in a nestbox, although the nest itself was not described (Zusi 1969). The eggs are greenish blue and unmarked (Bond 1941). The clutch is three eggs. One set measured 25 x 19.6 mm, 26 x 19.5 mm, and 27 x 19.6 mm (Bond 1941).